/* =========================================================
   Tengu Corp — 起動 → 神域 → 信号
   色は3色だけ：黒 / 白 / 赤オレンジ
   ========================================================= */
:root {
  --black: #050505;
  --white: #f2f2f2;
  --dim: rgba(242, 242, 242, .45);
  --line: rgba(242, 242, 242, .14);
  --neon: #ff3b1a;
  --lv: 0;              /* 音量（0〜1）。JSが更新し、演出全体が反応する */
  --mono: "Share Tech Mono", ui-monospace, monospace;
  --body: "Zen Kaku Gothic New", system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--black);
  color: var(--white);
  font-family: var(--body);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img { display: block; max-width: 100%; height: auto; }
[hidden] { display: none !important; }
:focus-visible { outline: 1px solid var(--neon); outline-offset: 4px; }

/* ---------- ① 起動（ブート画面） ---------- */
#boot {
  position: fixed; inset: 0; z-index: 100;
  background: var(--black);
  display: grid; place-items: center;
  font-family: var(--mono);
  transition: opacity .7s ease, visibility .7s;
}
#boot-log {
  width: min(92vw, 560px);
  font-family: inherit; font-size: clamp(12px, 3.2vw, 15px);
  color: var(--white); white-space: pre-wrap; line-height: 1.9;
}
#boot-log .ok { color: var(--neon); }
#boot-log .cur { display: inline-block; width: .6em; height: 1em; background: var(--white); vertical-align: -2px; animation: blink .8s steps(1) infinite; }
#boot-skip {
  position: absolute; right: 20px; bottom: 20px;
  font-size: 12px; letter-spacing: .2em; color: var(--dim);
}
#boot-skip:hover { color: var(--white); }
body:not(.is-booting) #boot { opacity: 0; visibility: hidden; }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- HUDナビ ---------- */
.hud-top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px clamp(16px, 4vw, 40px);
  font-family: var(--mono); font-size: 13px; letter-spacing: .14em;
}
/* 左上：羽団扇の小さなマーク＋角括弧の枠 */
.hud-mark { position: relative; display: grid; place-items: center; width: 44px; height: 44px; }
.hud-mark img { width: 34px; height: 34px; filter: url(#alpha-boost); transition: filter .3s; }
.hud-mark:hover img { filter: url(#alpha-boost) drop-shadow(0 0 8px rgba(255, 59, 26, .8)); }
.hud-mark::before, .hud-mark::after, .hud-mark i::before, .hud-mark i::after {
  content: ""; position: absolute; width: 8px; height: 8px; border: 1px solid var(--dim);
}
.hud-mark::before { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.hud-mark::after { bottom: 0; right: 0; border-left: 0; border-top: 0; }
.hud-mark i::before { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.hud-mark i::after { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.hud-nav { display: flex; gap: clamp(14px, 2.4vw, 32px); text-transform: uppercase; }
.hud-nav a { position: relative; color: var(--dim); transition: color .2s; }
.hud-nav a::before { content: "+"; position: absolute; left: -1em; opacity: 0; color: var(--neon); transition: opacity .2s; }
.hud-nav a:hover { color: var(--white); }
.hud-nav a:hover::before { opacity: 1; }
.lang { display: flex; border: 1px solid var(--line); }
.lang button { padding: 4px 10px; font-size: 12px; color: var(--dim); }
.lang button[aria-pressed="true"] { background: var(--white); color: var(--black); }

/* ---------- ② 神域（ヒーロー） ---------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 88px 16px 96px; text-align: center; overflow: hidden;
  isolation: isolate;
}
#field { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }

.hud-corners i { position: absolute; width: 22px; height: 22px; border: 1px solid var(--dim); }
.hud-corners i:nth-child(1) { top: 72px; left: clamp(12px, 3vw, 32px); border-right: 0; border-bottom: 0; }
.hud-corners i:nth-child(2) { top: 72px; right: clamp(12px, 3vw, 32px); border-left: 0; border-bottom: 0; }
.hud-corners i:nth-child(3) { bottom: 24px; left: clamp(12px, 3vw, 32px); border-right: 0; border-top: 0; }
.hud-corners i:nth-child(4) { bottom: 24px; right: clamp(12px, 3vw, 32px); border-left: 0; border-top: 0; }

/* 左：縦の目盛り（ゆっくり流れる）＋ 試聴中は音声波形を表示 */
.hud-ruler {
  position: absolute; top: 50%; left: clamp(20px, 4vw, 48px); transform: translateY(-50%);
  width: 56px; height: min(44vh, 360px); overflow: hidden;
  border-left: 1px solid var(--line);
}
#wave { position: absolute; inset: 0; width: 100%; height: 100%; }
.hud-ruler i {
  position: absolute; inset: -40px 0 0 0;
  background:
    repeating-linear-gradient(to bottom, var(--dim) 0 1px, transparent 1px 40px) left / 14px 100% no-repeat,
    repeating-linear-gradient(to bottom, var(--line) 0 1px, transparent 1px 8px) left / 7px 100% no-repeat;
  animation: ruler 6s linear infinite;
}
.hud-ruler::after { content: ""; position: absolute; left: -1px; top: 50%; width: 9px; height: 9px; background: var(--neon); transform: translate(-4px, -50%) rotate(45deg); }
@keyframes ruler { to { transform: translateY(40px); } }

/* 右：12段のレベルメーター。--lv（音量）に合わせて下から点灯 */
.hud-meter {
  position: absolute; top: 50%; right: clamp(20px, 4vw, 48px); transform: translateY(-50%);
  display: flex; flex-direction: column-reverse; gap: 5px;
  padding: 8px 6px; border: 1px solid var(--line);
}
.hud-meter i { width: 14px; height: 3px; background: var(--line); transition: background .08s; }
.hud-meter i.on { background: var(--white); }
.hud-meter i.on.hot { background: var(--neon); box-shadow: 0 0 6px var(--neon); }

.shrine {
  position: relative;
  width: clamp(170px, min(34vw, 36svh), 380px); aspect-ratio: 1;
  display: grid; place-items: center;
}
.halo {
  position: absolute; inset: -18%; width: 136%; height: 136%;
  fill: none; stroke: var(--white);
  transform: scale(calc(1 + var(--lv) * .08));
  transition: transform .08s linear;
}
.halo circle { transform-origin: 200px 200px; }
.halo .r1 { stroke-opacity: .28; }
.halo .r2 { stroke-opacity: .2; stroke-dasharray: 2 7; animation: spin 60s linear infinite; }
.halo .r3 { stroke-opacity: calc(.12 + var(--lv) * .5); stroke-dasharray: 60 24; animation: spin 90s linear infinite reverse; }
@keyframes spin { to { transform: rotate(360deg); } }

.hauchiwa {
  width: 100%;
  translate: -3% 0;   /* 見た目の重心に合わせて少しだけ左へ */
  filter: url(#alpha-boost) brightness(calc(1.05 + var(--lv) * .6)) drop-shadow(0 0 calc(6px + var(--lv) * 26px) rgba(255, 59, 26, .6));
  animation: flicker 7s infinite;
}
@keyframes flicker {
  0%, 18%, 22%, 61%, 63%, 100% { opacity: 1; }
  20% { opacity: .55; }
  62% { opacity: .7; }
}

.wordmark { width: min(88vw, 760px); margin-top: clamp(4px, 2vw, 18px); }
.wordmark img { width: 100%; filter: drop-shadow(0 0 12px rgba(255, 255, 255, .25)); }

.tagline { margin-top: 14px; font-size: clamp(12px, 1.5vw, 14px); color: var(--dim); }

/* ---------- ③ 信号（試聴） ---------- */
.signal {
  margin-top: clamp(24px, 4vw, 40px);
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap; justify-content: center;
  padding: 14px 18px; border: 1px solid var(--line);
  background: rgba(5, 5, 5, .6); backdrop-filter: blur(6px);
  text-align: left;
}
.play {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 13px; letter-spacing: .18em;
}
.play svg {
  width: 44px; height: 44px; padding: 12px;
  border: 1px solid var(--neon); border-radius: 50%; fill: var(--neon);
  box-shadow: 0 0 calc(4px + var(--lv) * 24px) rgba(255, 59, 26, .6);
  transition: background .2s;
}
.play:hover svg { background: rgba(255, 59, 26, .12); }
.play .ic-pause, .play[aria-pressed="true"] .ic-play { display: none; }
.play[aria-pressed="true"] .ic-pause { display: inline; }
.signal-info { display: grid; line-height: 1.4; }
.signal-info .label { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--dim); }
.signal-info strong { font-family: var(--mono); font-weight: 400; font-size: 20px; letter-spacing: .12em; }
.signal-info .sub { font-size: 12px; color: var(--dim); }
.signal-info { min-width: 220px; }
/* ジャンル：曲名の次に目立つ（赤オレンジ・枠付き） */
.trk-genre {
  justify-self: start; margin: 4px 0 2px; padding: 1px 8px;
  border: 1px solid var(--neon); color: var(--neon);
  font-family: var(--mono); font-size: 13px; letter-spacing: .14em;
  box-shadow: 0 0 10px rgba(255, 59, 26, .25) inset;
}
.trk-genre:empty { display: none; }
.trk-orig { font-size: 12px; color: var(--white); opacity: .8; }
.trk-orig:empty, .signal-info .sub:empty { display: none; }
.trk-nav { display: flex; border: 1px solid var(--line); }
.trk-nav button { width: 34px; height: 34px; font-family: var(--mono); font-size: 18px; color: var(--dim); transition: color .2s, background .2s; }
.trk-nav button + button { border-left: 1px solid var(--line); }
.trk-nav button:hover { color: var(--white); background: rgba(242, 242, 242, .06); }
.signal-info.switching > * { animation: trk-in .45s ease; }
@keyframes trk-in { 0% { opacity: 0; transform: translateX(8px); filter: blur(2px); } 100% { opacity: 1; transform: none; filter: none; } }
.signal-links { display: flex; gap: 8px; }
.btn {
  padding: 7px 14px; border: 1px solid var(--white);
  font-family: var(--mono); font-size: 12px; letter-spacing: .16em;
  transition: background .2s, color .2s;
}
.btn:hover, .btn--solid { background: var(--white); color: var(--black); }
.btn--solid:hover { background: var(--neon); border-color: var(--neon); color: var(--black); }

.scroll-cue {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%);
  display: grid; justify-items: center; gap: 6px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .3em; color: var(--dim);
}
.scroll-cue i { width: 1px; height: 28px; background: linear-gradient(var(--white), transparent); animation: cue 2.4s ease-in-out infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* =========================================================
   ④ 端末：各セクション共通
   ========================================================= */
.hud-top::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(var(--black) 30%, transparent);
  opacity: .9; pointer-events: none;
}
.menu-btn { display: none; font-family: var(--mono); font-size: 12px; letter-spacing: .2em; padding: 4px 10px; border: 1px solid var(--line); }

.sec {
  position: relative;
  max-width: 1200px; margin: 0 auto;
  padding: clamp(72px, 10vw, 128px) clamp(16px, 4vw, 40px) 0;
  scroll-margin-top: 40px;
}
.sec-head {
  display: grid; grid-template-columns: auto auto 1fr; align-items: center; gap: 4px 16px;
  margin-bottom: clamp(28px, 4vw, 44px);
  font-family: var(--mono);
}
.sec-head .no { font-size: 12px; color: var(--neon); letter-spacing: .2em; }
.sec-head .no::before { content: "// "; color: var(--dim); }
.sec-head h2 { font-weight: 400; font-size: clamp(26px, 4.4vw, 44px); letter-spacing: .14em; line-height: 1; }
.sec-head i { height: 1px; background: var(--line); position: relative; }
.sec-head i::after { content: ""; position: absolute; right: 0; top: -3px; width: 7px; height: 7px; border: 1px solid var(--dim); transform: rotate(45deg); background: var(--black); }
.sec-head p { grid-column: 2 / -1; font-family: var(--body); font-size: 13px; color: var(--dim); }
.sec-more { margin-top: 20px; text-align: center; }

/* AND MORE：一覧の下で「ほかにも作品がある」ことを示す */
.and-more { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px; margin-top: clamp(36px, 5vw, 56px); }
.am-line { height: 1px; background: linear-gradient(90deg, transparent, var(--line) 30%, var(--line)); }
.am-line:last-child { transform: scaleX(-1); }
.and-more p { display: grid; justify-items: center; gap: 4px; text-align: center; }
.and-more strong { font-family: var(--mono); font-weight: 400; font-size: clamp(22px, 3.4vw, 32px); letter-spacing: .4em; padding-left: .4em; }
.and-more strong::before, .and-more strong::after { content: "+"; color: var(--neon); font-size: .6em; vertical-align: middle; margin: 0 .6em; letter-spacing: 0; }
.and-more span:not(.am-line) { font-size: 12px; color: var(--dim); }

/* 参加履歴：直近3件以外は折りたたみ */
.event-log li.is-old { display: none; }
.event-log.open li.is-old { display: grid; }
.event-more {
  justify-self: start; margin-top: 4px; padding: 6px 2px;
  font-family: var(--mono); font-size: 12px; letter-spacing: .14em; color: var(--dim);
}
.event-more::before { content: "+ "; color: var(--neon); }
.event-more[aria-expanded="true"]::before { content: "− "; }
.event-more:hover { color: var(--white); }
.label { font-family: var(--mono); font-size: 11px; letter-spacing: .22em; color: var(--dim); }

.btn--sm { padding: 5px 10px; font-size: 11px; }

/* スクロールで出現 */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Discography ---------- */
/* 種類の切り替えタブ */
.disco-tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.disco-tabs button {
  padding: 6px 14px; border: 1px solid var(--line);
  font-family: var(--mono); font-size: 12px; letter-spacing: .14em; color: var(--dim);
  transition: color .2s, border-color .2s, background .2s;
}
.disco-tabs button:hover { color: var(--white); border-color: var(--dim); }
.disco-tabs button[aria-selected="true"] { color: var(--black); background: var(--white); border-color: var(--white); }
.disco-tabs .n { margin-left: .6em; font-size: 10px; opacity: .6; }
.rel.is-hidden { display: none; }
.disco-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 210px), 1fr)); gap: clamp(16px, 2vw, 24px); }
.rel { position: relative; border: 1px solid var(--line); background: rgba(242, 242, 242, .015); transition: border-color .25s; }
.rel:hover { border-color: var(--neon); }
.rel::before, .rel::after { content: ""; position: absolute; width: 10px; height: 10px; border: 1px solid var(--white); opacity: 0; transition: opacity .25s; z-index: 2; }
.rel::before { top: -5px; left: -5px; border-right: 0; border-bottom: 0; }
.rel::after { bottom: -5px; right: -5px; border-left: 0; border-top: 0; }
.rel:hover::before, .rel:hover::after { opacity: 1; }
.rel-art { position: relative; aspect-ratio: 1; overflow: hidden; background: #0d0d0d; }
.rel-art > img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease, filter .5s; filter: grayscale(.2); }
.rel-art > img.yt { transform: scale(1.34); }   /* YouTubeサムネイルの上下の黒帯を隠す */
.rel-art > img.contain { object-fit: contain; padding: 8%; }   /* 正方形でない画像は全体を見せる */
.rel:hover .rel-art > img { transform: scale(1.05); filter: none; }
.rel:hover .rel-art > img.yt { transform: scale(1.4); }
.rel-art::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: repeating-linear-gradient(transparent 0 2px, rgba(0, 0, 0, .22) 2px 3px); opacity: .5; }
.ph { height: 100%; display: grid; place-items: center; align-content: center; gap: 10px; padding: 16px; text-align: center; }
.ph img { width: 46%; filter: url(#alpha-boost); opacity: .85; }
.ph span { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; color: var(--dim); }
.tag { position: absolute; top: 10px; left: 10px; z-index: 1; padding: 2px 8px; background: var(--black); border: 1px solid var(--dim); font-family: var(--mono); font-size: 10px; letter-spacing: .16em; }
.rel-meta { padding: 14px 14px 16px; display: grid; gap: 2px; }
.cat { font-family: var(--mono); font-size: 10px; letter-spacing: .2em; color: var(--neon); }
.rel-meta h3 { font-family: var(--mono); font-weight: 400; font-size: 17px; letter-spacing: .06em; line-height: 1.35; overflow-wrap: anywhere; }
.credit { font-size: 11px; color: var(--dim); }
.ev { font-size: 11px; color: var(--dim); min-height: 1.7em; }
.rel-act { display: flex; gap: 8px; margin-top: 10px; }

/* ---------- Event ---------- */
.event-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: clamp(16px, 3vw, 32px); align-items: start; }
.event-next { position: relative; display: grid; gap: 6px; justify-items: start; padding: 28px 24px; border: 1px solid var(--neon); box-shadow: 0 0 24px rgba(255, 59, 26, .12) inset; }
.event-next strong { font-family: var(--mono); font-weight: 400; font-size: clamp(28px, 5vw, 48px); letter-spacing: .14em; line-height: 1.1; }
.event-next .note { font-size: 13px; color: var(--dim); margin-bottom: 8px; }
.event-next .sp { color: var(--neon); }
.event-hist { display: grid; gap: 12px; }
.event-log { list-style: none; padding: 0; border-top: 1px solid var(--line); }
.event-log li { display: grid; grid-template-columns: 3.4em minmax(0, 1fr); gap: 0 12px; padding: 12px 4px; border-bottom: 1px solid var(--line); }
.event-log .idx { grid-row: span 2; font-family: var(--mono); font-size: 12px; color: var(--neon); padding-top: 2px; }
.event-log .name { font-size: 14px; }
.event-log .rels { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: .06em; }

/* ---------- Video ---------- */
.video-wrap { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: clamp(16px, 2.4vw, 28px); }
.video-feature { position: relative; aspect-ratio: 16 / 9; background: #000; border: 1px solid var(--line); }
.video-feature iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.vf-poster { position: absolute; inset: 0; width: 100%; padding: 0; }
.vf-poster img { width: 100%; height: 100%; object-fit: cover; opacity: .8; transition: opacity .3s; }
.vf-poster:hover img { opacity: 1; }
.vf-play { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); width: 72px; height: 72px; display: grid; place-items: center; border: 1px solid var(--neon); border-radius: 50%; background: rgba(5, 5, 5, .6); box-shadow: 0 0 24px rgba(255, 59, 26, .5); }
.vf-play svg { width: 26px; fill: var(--neon); margin-left: 4px; }
.video-caption { display: grid; gap: 2px; padding: 14px 2px 0; }
.video-caption strong { font-family: var(--mono); font-weight: 400; font-size: 20px; letter-spacing: .08em; }
.video-caption .orig { font-size: 13px; color: var(--dim); }
.video-caption .derivative { font-family: var(--mono); font-size: 10px; letter-spacing: .16em; color: var(--neon); }
.video-list { display: grid; gap: 8px; max-height: min(520px, 62vh); overflow-y: auto; padding-right: 6px; scrollbar-width: thin; scrollbar-color: var(--dim) transparent; }
.vl-item { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 12px; align-items: center; padding: 6px; border: 1px solid transparent; text-align: left; transition: border-color .2s, background .2s; }
.vl-item img { width: 112px; aspect-ratio: 16 / 9; object-fit: cover; filter: grayscale(.5); }
.vl-item span { font-family: var(--mono); font-size: 13px; letter-spacing: .04em; }
.vl-item:hover { background: rgba(242, 242, 242, .04); }
.vl-item[aria-current="true"] { border-color: var(--neon); }
.vl-item[aria-current="true"] img { filter: none; }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(24px, 5vw, 64px); align-items: center; }
.about-mark { width: min(100%, 320px); justify-self: center; filter: url(#alpha-boost) drop-shadow(0 0 18px rgba(255, 59, 26, .35)); animation: flicker 9s infinite; }
.about-body > p { font-size: clamp(14px, 1.6vw, 16px); line-height: 2; }
.about-notice { margin-top: 14px; padding-left: 12px; border-left: 2px solid var(--neon); font-size: 13px; color: var(--dim); }
.about-spec { margin-top: 28px; display: grid; border-top: 1px solid var(--line); }
.about-spec div { display: grid; grid-template-columns: 8em 1fr; padding: 10px 0; border-bottom: 1px solid var(--line); }
.about-spec dt { font-family: var(--mono); font-size: 11px; letter-spacing: .22em; color: var(--dim); padding-top: 3px; }
.about-spec dd { margin: 0; font-size: 14px; }

/* ---------- Links ---------- */
.links { list-style: none; padding: 0; border-top: 1px solid var(--line); }
.links a { display: grid; grid-template-columns: 8em minmax(0, 1fr) auto; align-items: center; gap: 16px; padding: clamp(18px, 2.6vw, 26px) 8px; border-bottom: 1px solid var(--line); position: relative; overflow: hidden; transition: padding .3s, color .3s; }
.links a::before { content: ""; position: absolute; inset: 0; background: var(--white); transform: scaleX(0); transform-origin: left; transition: transform .35s cubic-bezier(.2, .7, .2, 1); z-index: -1; }
.links a:hover { color: var(--black); padding-left: 20px; }
.links a:hover::before { transform: scaleX(1); }
.links a:hover .lk-key, .links a:hover .lk-go { color: var(--neon); }
.lk-key { font-family: var(--mono); font-size: 12px; letter-spacing: .24em; color: var(--dim); transition: color .3s; }
.lk-val { font-family: var(--mono); font-size: clamp(16px, 2.6vw, 26px); letter-spacing: .06em; overflow-wrap: anywhere; }
.lk-go { font-family: var(--mono); font-size: 22px; color: var(--dim); }

/* ---------- フッター ---------- */
.foot { margin-top: clamp(96px, 12vw, 160px); padding: 48px 16px 40px; border-top: 1px solid var(--line); display: grid; justify-items: center; gap: 14px; text-align: center; }
.foot img { width: min(70vw, 360px); opacity: .9; }
.foot-note { max-width: 640px; font-size: 11px; color: var(--dim); line-height: 1.8; }
.foot-copy { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--dim); }
.foot-sep { margin: 0 .6em; opacity: .5; }
.foot-contact { font-size: inherit; letter-spacing: inherit; color: inherit; text-decoration: underline dotted; text-underline-offset: 3px; }
.foot-contact:hover, .foot-mail:hover { color: var(--white); }
.foot-mail { letter-spacing: .08em; }

/* ---------- XFDの小窓 ---------- */
.player { margin: auto; width: min(92vw, 960px); padding: 0; border: 1px solid var(--neon); background: var(--black); color: var(--white); }
.player::backdrop { background: rgba(0, 0, 0, .82); backdrop-filter: blur(4px); }
.player-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 14px; font-family: var(--mono); font-size: 12px; letter-spacing: .14em; border-bottom: 1px solid var(--line); }
.player-bar button { color: var(--dim); font-size: 11px; letter-spacing: .2em; }
.player-bar button:hover { color: var(--neon); }
.player-body { position: relative; aspect-ratio: 16 / 9; }
.player-body iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---------- タブレット・スマホ ---------- */
@media (max-width: 900px) {
  .event-wrap, .video-wrap, .about { grid-template-columns: minmax(0, 1fr); }
  .video-list { max-height: none; overflow: visible; grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr)); padding: 0; }
  .about-mark { width: 180px; }
}
@media (max-width: 760px) {
  .hud-ruler, .hud-meter { display: none; }
  .trk-genre { justify-self: center; }
  .menu-btn { display: block; margin-left: auto; }
  .hud-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 8px 16px 16px; background: var(--black); border-bottom: 1px solid var(--line);
  }
  .hud-nav a { padding: 12px 4px; border-bottom: 1px solid var(--line); color: var(--white); }
  body.menu-open .hud-nav { display: flex; }
  .signal { flex-direction: column; text-align: center; }
  .signal-info { justify-items: center; }
  .sec-head { grid-template-columns: auto 1fr; }
  .sec-head i { display: none; }
  .links a { grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; }
  .lk-key { grid-column: 1 / -1; }
  .lk-go { grid-row: 2; grid-column: 2; }
}

/* 動きを減らす設定の人には演出を控えめに */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}